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How to Identify Real vs. Fake Gastrodia elata? A Few Practical Methods for You
"Parrot beak, concave navel, ringed dots and dried ginger skin outside, remember the rosin-like cross-section." This is the mnemonic for identifying real vs. fake Gastrodia elata. In this mnemonic, the rosin-like cross-section is an important basis for judging the authenticity of Gastrodia elata: it is long-oval, slightly flattened, wrinkled, sometimes curved. One end has a residual stem base or a reddish-brown withered bud (called the parrot beak), and the other end has a round navel-shaped scar (commonly called the concave navel). The outer skin is pale yellow or earth yellow, slightly transparent or opaque, with horizontal ring lines formed by dot-like protrusions. The texture is hard, not easy to break, and the cross-section is slightly flat and horny. The taste is slightly pungent and sweet, and when chewed it is crisp
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What are the simple methods for identifying sick pigs?
1. Watch the movements. A healthy pig's tail keeps swinging, and it responds quickly and sensitively to external stimuli. A healthy adult pig is greedy for food and fond of sleep. If food is given, it will come at the call; after eating its fill, it lies down and dozes; when a stranger approaches, it stands up, raises its head, and keeps wagging its tail. If a pig is found to be listless, sluggish in movement, often lying down and unable to get up, refusing to eat, with a stiff back and unsteady walking, and with its head and tail drooping, then it is a sick pig. 2. Look at the skin. A healthy pig has smooth, round skin and full muscles; if the pig's skin is rough and hard and lacks elasticity, with swelling, ulcers, red spots, rotten patches, etc., these are signs of disease.
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What methods are there for identifying the quality of jasmine tea
Jasmine tea is a natural beverage for people to drink, so it should be identified mainly by its internal qualities, while also examining its appearance (external form). 1. Appearance: evaluated by strip shape, color and evenness. ① Strip shape (called "modeling" for famous fine teas): it should be tightly rolled and sturdy. Famous teas have their own unique requirements, such as Longjing tea (Dragon Well tea), which requires flat, even and straight leaves; Biluochun, which requires curled and tender leaves, and so on. But generally speaking, spring tea usually has tightly rolled and heavy strips, while summer and autumn tea is lighter and thinner or coarse and loose. High-grade tea requires many buds with abundant downy tips, and they should be plump and strong. ② Color: jasmine tea is made from green tea as the raw material,
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Detailed Guide to Identifying and Controlling Common Mushroom Diseases
I. Fungal Diseases 1. Brown rot. Also known as white rot and blister disease. The pathogen spores are brought into the mushroom house through casing soil and spread by air and insect pests. When the air in the mushroom house is not circulating and high temperature and high humidity occur, the disease is severe. A large amount of white mycelium forms on the mushroom bed. After infection, the stipe of the fruiting body swells into a blister-like shape, and in severe cases deformed mushrooms form, turning brown, or white flocculent spherical masses form in which the cap and stipe are indistinguishable. Control method: mainly disinfect the casing soil. Place the casing soil in an empty room, and fumigate at a ratio of 5 ml of formaldehyde plus 3 g
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How to Identify Soybean Downy Mildew? A Complete Guide to Prevention and Control Techniques
Downy mildew is found in all major soybean-producing regions of China, occurring more frequently in the cold-climate areas of the Northeast and North China during the soybean growing season, with the disease worsening in rainy years, severely causing premature leaf drop or wilting, seed rot, and yield losses of 30%-50%. It mainly damages the leaves, pods, and seeds of seedlings or mature plants. Symptoms: The pathogen on infected seeds causes systemic infection leading to seedling disease, but the cotyledons show no symptoms. After the first pair of true leaves unfolds, chlorotic patches appear along both sides of the leaf veins, spreading along the main vein and lateral veins, causing the entire leaf to lose chlorophyll, with
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What are the key points for identifying healthy rabbits versus sick rabbits?
1 Observing demeanor: A healthy domestic rabbit has bright, spirited eyes, is active and alert, and responds quickly. It rests lying flat or on its side; when awake its eyes are fully open, when dozing its eyes are half-closed, and when sleeping its eyes are fully closed. At the slightest disturbance, it immediately raises its ears and lifts its head. If a rabbit is found to respond slowly and have dull eyes, it is sick. 2 Testing appetite: A healthy rabbit has a strong appetite, eats a lot and quickly, and chews vigorously. Before food is even added, it grabs the cage door with its front paws, jumps, and eagerly seeks food. If a rabbit is found not eating feed or moving very slowly, wanting to eat but not eating, this indicates illness,
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How to Identify Mushroom Quality? Practical Identification Methods Taught to You
Mushrooms are a major category of edible fungi, divided into two types: wild mushrooms and artificially cultivated mushrooms. There are many kinds of wild mushrooms, and their shapes and species vary depending on the geographical environment and climatic conditions in which they grow. The variety of artificially cultivated mushrooms is increasing day by day. The most popular ones on the market include enoki mushrooms, shiitake mushrooms, oyster mushrooms, and phoenix-tail mushrooms. Good-quality edible mushrooms -- have the normal commercial appearance of edible mushrooms, with color matching their variety, normal odor, no off-flavors, pure variety, uniform size, and must not be mixed with non-edible fungi.
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How to identify Schisandra chinensis? Learn these few tricks to tell it apart easily
Schisandra chinensis is also known as northern schisandra. It is a perennial deciduous woody vine of the genus Schisandra in the family Magnoliaceae, and its fruit is used as medicine. Schisandra chinensis mainly contains volatile oil, whose main components include citric acid, a-ylangene, sugars, benzoic acid, citral, and others. The seeds contain schisandrin and others. The fruit is sour in taste and warm in nature. It has functions such as astringing, relieving cough, nourishing the kidney, securing essence, and promoting fluid production. It mainly treats cough and asthma, lung deficiency, spontaneous sweating, insomnia, chronic diarrhea, fluid depletion, and other conditions. Schisandra chinensis is mainly produced in the three provinces of Heilongjiang, Jilin, and Liaoning. In addition, Hebei, Inner Mongolia, Shandong,
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How to identify high-quality fish fry? Master these selection tips
Check the size of the fish fry. Fish of the same species from the same pond should be uniform and even when harvested, with little difference in body length and weight. In contrast, poor-quality fish fry with large individual differences and uneven sizes often result in a low overall survival rate due to competition for food, mixed genetic stock, poor management and other reasons. Check the body color of the fish fry. High-quality fish fry have bright, glossy body colors. Different species and different farming methods produce fish fry with different body colors. Generally speaking, high-quality silver carp fry should have a silver-gray back and silvery-white sides and belly. High-quality
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What methods are there for identifying the authenticity of deer blood?
Based on the theory of serological antibody precipitation reactions in forensic medicine, using anti-deer Hb (hemoglobin) serum as the antibody, deer blood powder was rapidly and accurately identified, providing a new, accurate and stable method for the raw material quality control of this precious traditional Chinese medicine. 1. Experiment and Methods 1.1 Preparation of anti-deer Hb serum Antigen: Several milliliters of deer blood were collected under aseptic conditions and placed into a container with an appropriate amount of anticoagulant, then stored in a refrigerator. The sample was taken out and centrifuged with physiological saline to wash away the plasma components.
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